Dogs need more brain power than cats
The researchers, from Oxford University found that social species of mammals need more brain power than solitary animals – meaning that dogs have evolved to have bigger brains than cats.
The team of experts charted the evolution of the brain in over 500 different living and fossilised mammals. From the research it seems that those mammals with bigger brains tended to live in more stable social groups, as compared to those with smaller brains. Brains of horses, camels, dolphins and dogs seemed to grow the most over time whereas cats, rhino and deer showed a much less rapid development.